Sankey and Gibson

Chancellor Sankey handing a degree to a graduate. Dr. Gibson in the background.

The crystal and molecular structure of 18-Crown-6 HgC12 and 18-Crown-6 Cdc12

Hg(18-Crown-6)C12 and Cd(18-Crown-6)C12 are isostructura1, space group Cl~ Z = 2. For the mercury compound, a = 10.444(2) A° , b = 11. 468(1) A° , c = 7.754(1) A° , a = 90.06(1)°, B = 82.20(1)°, Y = 90.07(1)°, Dobs = 1.87, Dca1c = 1.93, V = 920.05 13, R = 4.66%. For the cadmium compound, 000 a = 10.374(1) A, b = 11.419(2) A, c = 7.729(1) A, a = 89.95(1)°, B = 81.86(2)°, Y = 89.99(1)°, Dobs = 1.61, Dcalc = 1.64, V = 906.4613, R = 3.95%. The mercury and cadmium ions exhibit hexagonal bipyramidal coordination, with the metal ion located on a centre of symmetry in the plane of the oxygen atoms. The main differences between the two structures are an increase in the metal-oxygen distance and a reduction in the metalchloride distance when the central ion changes from Cd2+ to Hg2+. These differences may be explained in terms of the differences in hardness or softness of the metal ions and the donor atoms.

William Still's Boarding House advertisement [n.d.]

Original advertisement for William Still's Boarding House, No. 832 South Street, below 9th, south side Philad'a [sic]. Not dated. The advertisement includes handwritten marginalia, possibly by William Still, on the left-hand side referring to St. Catharines. There is a small embossed stamp on the upper left-hand corner of the advertisement. This item was in the possession of the Rick Bell Family of St. Catharines.Handwritten marginalia (original spelling and punctuation): "Do remember me very kindly to all my enquiring friends _ I but seldom hear of late from St. Catherines" The street number printed in the original advertisement (374) has been crossed out in black ink and a handwritten "832" has been inserted. William Still was an African-American abolitionist from Philadelphia and clerk of the Anti-Slavery Society who by his own account assisted 649 slaves receive freedom. He kept records on fugitive slaves so their relatives could find them later. In 1872, he published his records in a book entitled, The Underground Railroad. Source: William Still Underground Railroad Foundation: http://www.undergroundrr.com/foundation/about.htm

Niagara Falls Suspension Bridge Company fonds, 1875-1876, 1878, 1884

In 1846, the governments of Upper Canada and the State of New York initiated the creation of two companies that would be authorized to build a bridge over the Niagara River. The bridge was to be owned by both companies, respectively known as the Niagara Falls Suspension Bridge Company (Canadian) and the International Bridge Company (American). A suspension bridge was completed in 1848. This bridge was later replaced by a second suspension bridge that accommodated railways, built in 1853-54. However, the increasing weight of trains made it necessary for the bridge to be redesigned, and a third bridge was completed in 1886. Eventually, this bridge was replaced by a steel arch bridge, which was completed in 1897.

Niagara Ship Canal [to accompany Bill H.R. no.432] (1858)

At head of Caption title: 35th Congress, 1st session. House of Representatives, Report no. 374.

The True and Wonderful Story of Paul Gasford

"The following true and remarkable story is taken from the Christian advocate, a respectable paper published by the Methodist Connexion, in the city of New-York."--Preface, t.p. verso. The Christian advocate was first published in 1826. See ULS. Caption title: Paul Gasford. In printed wrapper. "Advice from a bee."--poem, p. [16]. "English classics, for sale by M. Day, 374 Pearl-st."--p. [4] of wrapper.